RE6OF V[6E Volume XX Oregon State University, January 1971 I p Number 1 Vegetable Varieties Recommended for 1971 Every two years the J)epartment of Horticulture Suggestions Requested For Improving Digest We are beginning our twentieth year of publication of Oregon Vegetable Digest. In our first issue, Director F. E. Price stated, 'All (lepartments that deal with vege- table problems will contribute to its pages. New and significant findings, here and elsewhere, vill be summarized by specialists in the various fields. It is hoped that others interested in the we1 fare of the industry--growers, fleidmen, processors, county extension agents. and otherswill take an active part and interest in the publication. Comments and suggestions may be sent to this office.'' We welcome your comments and suggestions for improving future issues. Please send them to Department of Horticulture, Oregon State University, Corvallis, Oregon 97331. prepilres a list of vegetable varieties adapted to various areas of Oregon. Old and new varieties are included, with comments on some of the new ones. The list should not be considered exhaustive; there are numerous varieties of most of our common vegetable crops, and in many instances there are several strains of a given variety. Caution is suggested in changing to new varieties without clear, compelling reasons. It is usually best to plant small trial plots or acreage at first and to repeat the tests for three years or more. Varieties will vary in behavior from year to year and from location to location. Many environmental factors such as soil, diseases, insects, temperature ( night and (lay) , solar radiation intensity and length of day) rainfall, irrigation, various chemicals, and impacts of machinery interact with varying heredity to give a range of responses among varieties and strains. When a strain of a given variety appears epeciallc promising, it may he well to purchase seed a year or two in a I vance, in I icating to the see' lsman the particuir 'tock (lesired. It is difficult for any one person to keep up with new variety developments in every crop. Therefore, it may be well to seek information from several sources. At Oregon T.e 7c '?44ce State University new, promising variety (levelopments \egetable Varieties Recomniended 1 Suggestions Requested for litiproving ID igest Harvesters Promising for Nigh Density Bush Beans Sloughing and Texture of Snap Beans Studied 1 in major crops usually are noted and tests run; with other crops, suggestions are based only on experience elsewhere. Sotirces of information may be experienced growers, county agents, fiel dmen, seedsmen's representatives, catalogues and (lescriptive lists, extension specialists, and vegetable breeders at OSLT. 4 Asparagus. Mary \'vasliington and California 500. Beans, green bush. Tendercrop, mottle-seeded, is now well established, especially for freezing. Gallatin 50 (Continued next page) Vegetable Varieties... The sprouts are closely spaced and pressed togethei along the stem, and there is some tendency for sprouts is an off-white seeded Fendercrop type. Executive and Fenderette are also of Tendercrop type. The Oregon 58 bush bean was released recently and is near Blue Lake pod quality. Tempo has shown some promise ; care at base of stem to become infected with soft rot if liarvest is delayed. Fancy Most and Catskill are suited for home and market use. should be exercised to harvest this variety at prime quality stage; it is not a large, fleshy type. 274 of Asgrow is somewhat late and heavy foliaged, with only fair concentration of set it is a fleshy type. Asgrow 290 is slim podded, vigorotis, late, of good quality. FM-14 Cabbage. Early and midseason: Golden Acre, Early Jersey Wakefield, Green Acre, Marion Market, Copenhagen Market, Bonanza, Market lopper, Market Prize, Stonehead, Ventura, Little Rock, Reeds Hybrid No. 1, Head Start, and Pace Setter. I ate: Danish Ballhead and Oregon Ballhead. Small : ilabyhead. Savoy: Chieftan and Savoy King. Use strains resistant to fusarium yellows if this disease has been a problem. Many good new F1 hybrids are being introduced ; the above list is not ; is a flat-pod type approaching Romano Pole in pod characteristics Beans, green pole. For processing: FM-1K, Prime Pack (considered essentially the original FM-i bean), FM-iL, and Asgrow 231. For eastern Oregon areas subject to curly top virtis damage: Columbia, developed by the late B. F. Dana; this bean is essentially of Blue complete. Cantaloupe. Spear, Oregon Delicious, Hales Best, and Hearts of Gold are somewhat late in western Oregon. Fusarium-resistant varieties: Iroquois, Harvest Queen, Delicious 51, and Resistant Honey Rock. Gold Lake quality. Other favorites of Oregon gardeners: Oregon Giant and Kentucky Wonder. Romano is a flatpod bean with distinctive flavor. Beans, wax bush. Puregold and Earliwax. A few OSLT wax beans of complex parentage are available for use by processors in small-plot work. For eastern Star, Harper Hybrid, Supermarket, Saticoy Hybrid, and Burpee Hybrid are F hybrids which have (lone well in western Oregon. All varieties perform best when Oregon curly to1) areas, we suggest contacting Matt Silbernagel, Irrigation Experiment Station, Prosser, Washington, and Dr. L. L. Dean, Bean Research Laboratory, Twin Falls, Idaho. grown (in a plastic or paper mulch. Crenshaw only in the warmer areas. Carrot. For processing: Red Cored Chantenay, Royal Chantenav, and Nantes. For the gardener: Red (ored Chantenav xviI I hold up longer in the fall without as much cracking and rotting as Nantes. Market Beans, lima pole. Christmas and Oregon a white runner'' bean of scarlet rtinner type). garden types: 1 mperator, Gold Spike, Gold Pak, Chanticleer, and Morse Bunching. Hybrid carrots hold promise for the future, but seed supplies have been short. Spar- Beans, lima bush. Large pod: Fordhook 242 and Concentrated Fordhook. Smdl pod : Clark's 1 tush, Early Thorogreen, Kingston, Thaxter (mildew resistant), and Henderson. tan Sweet, Spartan Bonus, and Hi Pak have shown profuse. Cauliflower. Snowball N, Snowball Y, Early Snow- Beets. Detroit Dark Red (mildew-resistant type, best for processing). Green TO1) Bunching, Seneca 1 )etroit, Early Wonder, and others. ball, and Snowdrift. For winter or spring types, there are a range of varieties from December to April. Early Broccoli. Waltham 29, Northwest Waltham, and Purple Head (purple florets) Spartan Early is smaller than the Walthanis but is suited for home use. 1 talian Green Sprouting is inferior to the varieties listed above, hut it may be all that is available in sonic cases. Harvester is of current interest for mechanical harvesting. Green Comet is an excellent, uniform F1 hybrid. Brussels sprouts. Jade Cross ( early L hybrid) is uniform in maturity and plant form attractive to aphids. Purple Head is a good garden variety. Celery. Utah ( there are many good strains of this green, long-petiole type) Corn, sweet. Jubilee, the most important commercial rocessg hybrid, will usually outvield GOI(lefl (ross, but both have good quality. Also for home and market: Early North Star and Golden Beauty; midseason to late Seneca Golden, Sugar King, FM-Cross, Oregon Vegetable Digest is published four times a year by the Agricultural Experiment Station, Oregon State University, Corvallis, G. Burton Wood, Director. Address correspondence to the author concerned or to the Department of Horticulture. Material may he reprinted providing no endorsement of a commercial product is stated or implied. Please credit Oregon State University. To simplify technical terminology, trade names of products or equipment sometimes will he used. No endorsement of products named is intended nor is criticism iml)lied ot prolucts not mentioned. 7 Vegetable Varieties... and Sugar Daddy. Tokay Sugar (early) and Silver Rhubarb. Valentine, MacDonald, and Riverside Giant. A few OSU hybrids are available for limited Queen (late) are high-quality white varieties well liked by home gardeners. trial. Cucumber. 1or pickling: MTt1 7 (mosaic resistant), SMR-15 (scab mosaic resistant), SMR-58, and other new disease-resistant varieties. Several F1 hybrid pickling cucumbers with concentrated crown set are avail- Summer squash. Zucchini, Caserta, Yellow Straightneck, Yellow Crookneck, and White Scallop or Ii hybrids of these varietal types. Burpee Hybrid, Storr's able and are adapted to mechanical harvest. For slicing: Burpee Hybrid, Sensation Hybrid, Surecrop Hybri (I, Marketmore, and Gemini. These F hybrids are usually very productive; they also (10 well in greenhouse pro- tionally productive green varieties which are easy to Green, Seneca Zucchini, and Zucchini Hybrid are excep- pick. Blackini has open foliage and is high in quality but less productive. Seneca Putterhar and Goldhar are yellow straightneck types of exceptional quality. There are many other new F hybrids of both the yellow and green types which are good. Avoid Dark Green Zucchini and Black Zucchini, which have heavy fohage. duction. Gemini and Marketmore are scab resistant. Poinsett and Marketer are open-pollinated varieties. M & M Hybrid has looked especially good in greenhouses. Winter squash. Hubbard (many types well adapted), Golden I )elicious, I lanana, Table Queen, Eggplant. Black Magic (early F hybrid), New Hampshire, Black Beauty, and Burpee Hybrid. Sweet Meat, Buttercup, Putternut, and Silver Bell. Butternut and Buttercup are outstanding for home use and are easily matured in western Oregon ; they are of convenient size and high in quality, but they are not adapted to long storage. Sweet Meat has good quality and is long Lettuce, head. Imperial 456, Phoenix, Pennlake, and various Great Lakes strains, such as GI. 659 and Premier. Oswego, Mesa, Fulton, and Monelto should be tried. keeping. Silver Bell keeps well and is very dry. Lettuce, leaf. Oak Leaf, Salad Bowl. Bronze Leaf Prizehead) is exceptional. Ruby is attractive but does Tomato. Early determinate, nonstaking types: Victor, Bounty, Fireball, New Yorker, and the OSU releases, Willamette and Medford. Medium early determinate: \Vasatch, Pritchard. Good hybrids of mediuni maturity, indeterminate, stake well : Moreton Hybrid, Pig Boy Hybrid, Pig larlv Hybrid, Burpee Hybrid, Burpee VF, Spring Giant, and Cardinal Hybrid. I nde- not necessarily have good quality. Lettuce, butterhead. Bibb, Summer Bibb, and Buttercrunch. Onion. Danvers Yellow Globe western ()regon) hybrid Surprise, and Sweet Spanish ( eastern Oregon). 1 nterest in small white pearl (pickling) onions warrants. a review of white, short-da types that are spherical in shape and have a very thin outer scale. Barletta types such as White Pearl, \\hite Creole, and FM-I -28 I are terminate, nonhybrid, meditim early, stake well : Stokesdale and Red Jacket ( potato leaf). Many new varieties are being released. Ace is large-fruited and of good quahtv, but somewhat late: I mmuna I 1rior Beta is small-fruited and has unusual ability to set fruit at low teinperature. The recent OSU release, I arge German promising when seeded early and thickly. Peas. Canners : I 1erfect ion tvl )e am I Aiaka sinai I early). Freezers: Fi-eezer 69, Frosty, Early Frosty, Dark Green Perfection, Midfreezer, and Jade. Market and garden: Alderman tall ), Little Marvel (i\varf( Thomas Laxton medium tall), Progress 9, and I cer 95. l'.nation mosaic-resistant Perfected Freezer 60 and Mohawk may be available for freezing and garden. A virusresistant OSU line is available for trial in home gardens. Cherry, is worthy of trial. Gotmden Boy has a large, mild, yellow fruit. California VF 145-21-4 and other strains are mci hum late hut of promise for verticillium and fusarium resistance. For a pear type, Napohi. medium m nat u m.i tv Watermelon. Klon( like ( many strains), New l-Hmpshiire IV! idget ( early ice box type, only fair quality, very small) , Charleston Cirav fusarium resistant, good shipper, relatively late maturing), and Crimson Sweet ( fusariuni resistant). Newer icebox melons should be tned. Sugar Baby is a medium small (lark green melon \vhichl is fairly early. Seedless varieties, Pepper. Large bell: \'olo Wonder ( mosaic resis- tant, somewhat late) Early Calwonder, I ennwonder, Keystone Resistant Giant, 1 (labelle, and Michigan Won, (her. New varieties to he tried are: jade, Mid\vav, hellringer, and Bellboy. For small fruit and very early: Vinedale, Early Pountiful, Morgold (orange), and such as Hybrid 313, should he tried. Vinette. Pumpkin. New England Pie, Small Sugar, \V. A. FRAZIER, j. R. BAGGE'I'T, N. S. MANSOUR, amid H. J. MACK Dcpartnm en t of Horticulture [acl< O'Lantern, Connecticut Field, and Dickinson; Big Max for exhibition. 3 Harvesters Promising for High Density Bush Beans Harvesting of snap beans in high density plantings (5 x 5-inch spacings) was demonstrated to be mechanically feasible by two experimental prototype harvesters that were tested at the OSU Vegetable Research Farm during 1969 and 1970. However, further testing, modifi- The Chisholm-Ryder self-propelled prototype harvester (Figure 2) was tested in high density plantings in 1970. The picking reel is perpendicular to rows or travels at a 90 degree angle to the rows, although in a 5 x 5-inch spacing there is really no row orientation. cations, and improvements are contemplated by the The picking reel could handle a planting about 72 inches wide. The harvester appeared to be very efficient in har- manufacturers. The tests were conducted in cooperation with engi- neers of Mather & Platt, Ltd., Manchester, England, and Chishoim-Ryder Company, Niagara Falls, New York, largely through the coordination of Dr. A. A. Duncan, former Vegetable Crops Specialist at OSU. vesting pods from plants. In one replicated test on Gallatin 50 snap beans, the percentage of pods remaining on the plant and those dropped on the ground was less than 8%. OSU agricultural engineers also cooperated. Several varieties of snap beans that varied in growth habit were planted in 40-inch "beds" (5 x 5-inch spacings) in 1969 and in 40- and 80-inch beds in 1970. Spacing between beds was 18 to 24 inches. Hand harvested yields in high density plantings were affected by varieties, planting ,dates, and harvest dates; the yields ranged from 8 to 12 tons per acre, with about 50% of the pods sieve size 4 and smaller. The Mather & Platt multi-row prototype harvester (Figure 1) was a pull-type harvester (picking reel and fans-) run by hydraulic motors. The 48-inch-wide picking reel was set at a 45 degree angle to the "rows." After picking and cleaning, the beans were elevated by an air stream to a bin above the tractor. Limited observations in 1969 showed that the highest picking efficiency was 85 to 88% as compared to hand harvest. This machine was not tested in Oregon during 1970, but it is understood that further tests were conducted in England. Figure 2. Chishoim-Ryder prototype high density harvester (1970). Future developments in high density bean plantings will be influenced by study and analysis of experimental harvester tests, feasibility of larger acreages of high density plantings and appropriate cultural practices, potential yield increases, and economics of development of production of the crop as well as the machines for Figure planting and harvesting. 1. Prototype multi-row harvester of Mather & Platt (1969). -H. J. MACK Department of Horticulture Sloughing and Texture of Snap Beans Studied The occurrence of sloughing in either canned or frozen cooked snap beans is an undesirable condition which can materially reduce US I )A grade for cliaracter. Fortunately, snap beans grown for processing in the Pacific Northwest are relatively low in fiber, stringless, and quite dependable in tenderness. One of the undesir- able products of high tenderness in snap beans, however, is sloughing of the skin. Slouqltinq means a loosening and parthd loss of the epidermal layers of the pod unit after being canned or frozen and cooked. The visual effect ranges from an tinsightiv shriveled appearance to various degrees of fraying and peeling of skin into the cooking water or brine. Pod split is a tendency of cut pods to split and expose seeds. it is often associated with sloughing in ten- der-walled varieties of beans. The probleni, as in the case of sloughing, is aggravated by agitation of the bean units (luring serving, particularly in institutional feeding. reactions which alter pectic substances and protiote changes in 1lH, texture, color, and vitamin content. The fresh snap bean pod, which initially contains pectic substances largely in form of methylated pectins (long polyiiierized molecules composed of sugar-like units, neutral in charge and hot water-soluble), is heated (Itiring the water blanch operation through an intermediate temperature range (150-180° i') where enzymes are activated to produce nonvolatile organic acids. I ectic acid, formed by enzymatic transformation of the neu- trd pectin molecules, is one of the principal acids formed. This enzyme action stops when pods are exposed to higher temperattires of 195 to 2100 F, so the amount of pectic acid formed depends on the rate at which pods pass through the intermediate tem] )erature range. Pectic acid and its Ca, Mg salts are relatively insoluble forms of pectic substances. In this state, the pectic material is kept in its intercellular position and good adhesion between cell tissues is retained. Factors affecting sloughing and pod split Variety. The genetic make-up of the snap bean aftects quality and distribution of pectic materials, the principal intercellular cementing substances, in the pod. Thus, varieties var- in their predisposition to sloughing and softness under normal processing condtions. I 'ole Romano Italian bean is highly susceptible to sloughing. Some new bush snap bean varieties available to indtistry, such as new Oregon 58, have excellent Blue Lake qualities of fleshiness, tenderness, and flavor ; however, sloughing, split pods, or softness may be present on (1) 300 5.0 200 4.0 (00 3.0 cooking. Cultural conditions. It has been shown that high soil moisture availability (luring growth increases pod tenderness and susceptibility to slough. Moisture stress (luring the growing season conversely reduces sloughing but creates other quality problems such as increased fiber, tough pod walls, and roughness. Sieve size. In general, the larger sieve sizes show less slough tendency; however, sieve size effect may be quite nominal in those varieties which retain good fieshiness and tenderness into the large sieve bean. Blanch. The processor of frozen vegetables is likely to consider the blanch operation I a particular h )t water process) important only to remove cell gases and inactivate enzymes responsible for flavor and color (leterioration after freezing. Research findings indicate that the blanch also can he responsible for initiating enzyme llns article was taken Ironi a talk given at .Aniericaii Frozen Food I list itul e Teehii i cal \Vork shop, 1 'ni-i land, Oregon September 17, 1970. 120 40 160 180 200 BLANCH TEMPERATURE (°F) Figure 1. Canned bean firmness and pectic acid content. This pectic acid formation has been closely linked with firming of the snal) bean 1 lod. When blanch temperature is varied and time is held constant, pectic acid con- tent and relative firmness increase together to a maximum around 170° as temperature is raised, then both lrop rather sharply with the use of temperatures above 180° F (Figure 1). Snap Beans The possibility of preventing a slough problem in Experimental Studies at OSU frozen snap beans by utilizing a preblancli at intermediate temperatures followed directly by a final high temperature inactivation blanch has been investigated. '[lie V If we were to nionitor the firmness of our snap beans after blanching, we might expect that the use of very high blanch temperatures would result in soft beans. The prime reason the canner of snap beans tises an intermediate blanch temperature (around 1750 F) is relative success of a preblanch step in a dual blanch system to suppress sloughing was assessed at 160° and 1700 F blanch temperatures with time varied (Figure 3). The 1700 F temperature was the more efficient of the two temperatures in altering texture, and the effect was proportioil to lime of blanch. to enhance firmness and simultaneously niinimize slotigh- ing. The canner may, if necessary, extend the firming ettect initiated by the intermediate blanch temperature by holding the pods for a period of time between blanch and sterilizing process. Figure 2 shows the effect on canned snap bean texture and sloughing when the blanched bean was held in a canning brine at constant -S temperature for periods up to two hours after the blanch. 120 (I) l?2F_" FIRMNESS 100 8O - (/) (J) Lu /5O° - - FIRMNESS 60- H 75°F 0 j60P Single Blanch /2/0 °F//05 sec 80/ * 60 4o SLOUGHING I0 S LO U G H ING 2 75°F \ 30 /50°F 60 90 120 150 PRE-BLANCH 7/ME (Seconds) Figure 3. Pre-blanch effect on frozen snap bean texture. 30 60 90 20 HOLDING TIME (Minutes) Figure 2. Canned snap bean texture after postblanch hold. V The overall value of such a lual blanch system niut be judged on evidence of both textural and color effects on the beans. The pH, nonuallv around 6.5, in V The freezer cannot follow the same course of action open to the canner to re luce a s tough or i split the fresh bean, tends to drop (luring pectic acid production in blanch-induced firming. This, in addition to extra problem. The freezing process requires that the en- heat exposure, would tend to lead to more loss of the bright green color desired in frozen beans. The magnitude of the color loss resulting (hirectiv from the preblanch treatment in a dual blanch system was objectively measured in terms of the ai,/b1, Gardner Color > I zvme systems be completely inactivated to stabilize qual- ity in frozen storage. High temperatures (2050 F and above) at minimal times are recommended to achieve inactivation and retain the bright green color desired in the beans. meter index and by visual score in a study on the frozen 6 Snap Beans... Oregon 58 bush bean (Figure 4). The instrumental results indicated that greenness declined steadily as preblanch time increased, although the color loss was (IcSingle Blanch tected visually only after the preblanch time exceeded one minute. This work suggests that a dual blanch utilizing a GARDNER COLOR (GREENNESS) /2lOF//O5 sec short preblanch at 1700 F may hold some proiiise as a processing technique for freezing certain snap bean varieties. Sloughin and soft texture would be avoided, 0.9 with a minimum damage in color. 0.8- Two other possible solutions to the slough problem in frozen snap beans have not yet been studied. l7O"F 0.7 Use of pH control of preblanch water within a close range of the normal pH 6.5 of fresh snap beans VISUAL COLOR RATING by use of appropriate buffering agents. 7*- introduction of soluble calcium into the blanch water as an adjunct to the firming effect of the pre- /60°F 5 - Single Blanch blanch treatment. Sonie reports indicate that addition of calcium salts to the brine in processing tests Ofl canned snap beans has not produced consistent firming in the canned product. Calcium salt addition even at relatively low levels also may introduce off-flavors in canned snap 2/O"F//O5sec ITO 30 60 90 20 50 PRE-BLANCH TIME (Seconds) beans. Figure 4. Pre-blanch effect on frozen snap bean GI-:oncE W. VAIsEvE1D I)cpartmcnt of I-'ood Science and Technology color. A Oecct A A o iccdecaé Socie4 '2/teetjg9d flaeca 2K-SO A vegetable session will be Part of the Oregon Horti- Labor, marketing, and legislation affecting horticultural producers will be featured in general sessions of the llorticultural Congress January 28-30. An equipment show will be an outstanding highlight in conjtinc- cultural Society meetings in Portland Meniorial Coliseum, January 28, 9:45 until noon. There will he Panel (hscUssiOfls on "A look at the bush bean situation'' and Sweet corn harvesters and harvesting.'' Also included will be progress reports on a nutritional survey in cole crops and use of plastic tape in seeding cucumbers. tion with the meetings. 1 )r. Robert W. MacVicar, president of Oregon State lniversit\-, will be the speaker at the annual banquet. 7